My tax refund is smaller than it should be??

I filed my taxes Feb 1st and did the 21 day return and hit the button to have the fees taken out of my taxes. I waited over a month to get my tax refund back and when I did it was $1500 under what I was supposed to get. Everytime I tried calling someone, I got the same response of "call again tomorrow" by an automated voice. I just want the rest of my money please.